Tania Escobar and her daughter Jimena Escobar, 10, arrive at Sky Harbor International Airport in Phoenix after their flight from Mexico City, Wednesday, April 29, 2009. The Escobar's wore face masks as a precautionary measure against the swine flu. AP Photo logo AP Photo 34 months ago

Tania Escobar and her daughter Jimena Escobar, 10, arrive at Sky Harbor International Airport in Phoenix after their flight from Mexico City, Wednesday, April 29, 2009. The Escobar's wore face masks as a precautionary measure against the swine flu.